Summary

• Implements Filament\Models\Contracts\HasName on the User model with a getFilamentName() method
• Provides a safe fallback chain: display_name → name → email, ensuring a non-null string is always returned
• Prevents ViewException when the filament-impersonate banner renders for users whose name column is null

Root Cause

Users created via OAuth (e.g. GitHub) can have a null name attribute. When an admin impersonates such a user, the filament-impersonate banner calls FilamentManager::getUserName(), which returns $user->getAttributeValue('name') with a string return type — causing a TypeError.

Closes #48

Test plan

• Test getFilamentName() returns name when present
• Test getFilamentName() returns display_name when name is null
• Test getFilamentName() returns email when both name and display_name are null
• Test getFilamentName() always returns a string

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